Presentation Information
[8p-PA3-25]Realization of Ecologically Harmonious Multi-Node PRC Devices Based on Waste-Plastic Derived CNTs
〇Kotaro Takanashi1, Yuuki Tanaka1, Seinosuke Hattori1, Takashi Ikuno1 (1.Tokyo Univ. of Sci.)
Keywords:
Carbon Nanotube,Plastic,Physical reservoir computing
We aim to upcycle waste plastics into high-value electronic devices. Previously, We synthesized carbon nanotubes(CNTs) from polyethylene(PE) decomposition gas with an efficiency of over 10%, and used CNF/CNT composite films as physical reservoir computing(PRC) layers.
However, conventional devices only used a single measurement points, so only local transient responses could be used for calculations. To improve performance, we fabricated a multi-node PRC device. CNTs derived from waste plastic were mixed with a CNF aqueous solution, ultrasonically dispersed for 30 minutes, and spray coated into a film. Then patterned 30 nm thick 16 gold electrodes were deposited. Electrode 8 was grounded, and a 5 V pulsed voltage was applied to electrode 0, and the voltage responses of each electrode were measured.
Each electrode showed a transient voltage change that decreased with distance from electrode 0. In a 14-nodes short-term memory(STM) task using random sequence(1200 pulses, Tp=0.1 seconds), the memory capacity(CSTM) was 2.73, exceeding previous study.
However, conventional devices only used a single measurement points, so only local transient responses could be used for calculations. To improve performance, we fabricated a multi-node PRC device. CNTs derived from waste plastic were mixed with a CNF aqueous solution, ultrasonically dispersed for 30 minutes, and spray coated into a film. Then patterned 30 nm thick 16 gold electrodes were deposited. Electrode 8 was grounded, and a 5 V pulsed voltage was applied to electrode 0, and the voltage responses of each electrode were measured.
Each electrode showed a transient voltage change that decreased with distance from electrode 0. In a 14-nodes short-term memory(STM) task using random sequence(1200 pulses, Tp=0.1 seconds), the memory capacity(CSTM) was 2.73, exceeding previous study.